Watch something else. There are very few redeeming qualities to this film.

It is interesting even when nothing much happens, which is for most of its 3-hour running time. Read full review

The film may be flawed, but its message is not.

If you're interested in the topic at hand, you should just watch it and judge yourself because the reviews have gone very biased by people that didn't even watch it and just hate (or love) the creator. I liked it, it was well written, narrated, and directed and it was about a topic that interests me.